A method and system for traction of ultra-long cable strands

Abstract

This invention provides a method and system for traction of ultra-long cable strands. By constructing a dual-support force structure for the cable strand to be traction using a front-end puller and a rear-end puller, the concentrated load borne by traditional single-point traction is effectively distributed to the two support points of the front-end and rear-end pullers. This greatly reduces the risk of puller tilting or overall overturning caused by stress concentration at a single point, providing a stable mechanical foundation for traction of ultra-long, heavy-duty cable strands. During traction operations, the traction speed and puller balance are monitored and actively controlled in real time using a monitoring module and a background control module, significantly reducing the lateral sway of the pullers and ensuring that the cable strand can move smoothly along the predetermined trajectory and posture. Ultimately, this achieves the goal of high-precision, high-safety, and stable traction, effectively solving the core technical challenge of traction of ultra-long cable strands in the construction of ultra-long span suspension bridges.

Description

Technical Field

[0001] This invention belongs to the field of suspension bridge cable strand erection technology, specifically relating to a method and system for traction of ultra-long cable strands. Background Technology

[0002] In the field of suspension bridge construction, the erection of the main cable strands is one of the core procedures to ensure the overall structural safety and stability of the bridge. Traditional construction methods typically use single-point pullers for traction, with winches driving the erection of each cable strand. This method is widely used in the construction of suspension bridges with spans of less than 2 kilometers.

[0003] However, with the continuous breakthroughs in bridge engineering technology, suspension bridges are constantly advancing towards ultra-large spans and gradually breaking through the 2-kilometer mark. The increase in span has led to a continuous increase in the size and weight of the single strand of the main cable of the suspension bridge, and the defects of the traditional single-point traction technology have gradually become apparent.

[0004] The core problem with traditional traction devices lies in their structural design, which struggles to guarantee the stability of ultra-long cable strands with spans exceeding 2 kilometers during the traction process. The single-point clamping method employed is prone to stress concentration, leading to clamping eccentricity under heavy loads and potentially causing the traction device to tilt or overturn. Furthermore, uneven weight distribution of the cable strands and the influence of external wind loads during traction exacerbate lateral swaying, reducing construction accuracy and potentially threatening operational safety. Therefore, based on these issues, a safe, stable, and adaptable traction method is urgently needed for erecting ultra-long cable strands to meet the construction requirements of ultra-long span suspension bridges. Summary of the Invention

[0005] To address the inherent limitations of existing cable strand traction technologies in the background art, such as poor stability and weak adaptability when dealing with ultra-long cables, which makes it difficult to meet the technical requirements of modern suspension bridge construction, this invention provides an ultra-long cable strand traction method and system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a method for traction of ultra-long cable strands, comprising:

[0008] S1: Assemble the traction device: Fix the front and rear pullers of the ultra-long cable strand traction system to the traction wire rope of the winch.

[0009] S2: Cable strand installation: Fix the cable strand to be pulled onto the wedge clamp on the front puller and the support clamp on the rear puller respectively, and use the front puller and the rear puller to form a double-support force structure for the cable strand to be pulled.

[0010] S3: System Initialization: Start and initialize the monitoring module on the front-end puller of the ultra-long cable traction system;

[0011] S4: Cable Traction: Start the winch of the ultra-long cable traction system to perform traction operation on the cable strand to be traction. During the traction process, the monitoring module monitors the traction speed and balance of the front-end puller in real time and sends the data to the background control module. The background control module controls the winch based on the traction speed and balance of the front-end puller to achieve smooth traction of the cable strand to be traction.

[0012] Optionally, step S1 specifically includes:

[0013] S1.1: Clamp and fix the main body of the front puller and the main body of the rear puller onto the traction wire rope of the winch respectively;

[0014] S1.2: Adjust the spacing between the main bodies of the front and rear pullers on the traction wire rope, and connect the front and rear pullers into one unit through a rigid connection structure;

[0015] S1.3: Assemble the modular counterweight module on the front puller to adjust the overall center of gravity to a balanced state.

[0016] Optionally, in step S1.3, the assembly and splicing of the counterweight module specifically includes: connecting multiple independent counterweight blocks with bolts to increase or decrease the total counterweight mass until the front-end puller has no tendency to tilt up when static.

[0017] Optionally, step S2 includes:

[0018] S2.1: Inspect the appearance of the strand to be pulled. After confirming that there is no surface damage, assemble the front end of the strand to be pulled with the wedge clip and place it into the wedge clamp of the front puller.

[0019] S2.2: The wedge clamp is fastened with high-strength bolts to anchor the front puller to the strand of the traction cable.

[0020] S2.3: Place the section of the cable strand to be pulled into the support clamp of the rear puller near the front end, and clamp and fix it with high-strength bolts. The front puller and the rear puller form a double-support force structure for the cable strand to be pulled, thereby realizing the installation of the cable strand to be pulled.

[0021] Optionally, in step S3, initializing the monitoring module on the front-end puller of the ultra-long cable traction system includes: performing initial position calibration using the GNSS positioning component in the monitoring module, and initializing the speed monitoring component and gyroscope balancing component in the monitoring module.

[0022] Optionally, step S4 includes:

[0023] S4.1: Start the winch, adopt the graded acceleration mode to start traction, and the initial traction speed of the front puller is not greater than the first set value;

[0024] S4.2: The traction speed of the front-end puller is monitored in real time by the monitoring module and sent to the background control module in real time. When the background control module determines that the traction speed of the front-end puller is stable, it controls the winch to gradually increase the traction speed of the front-end puller to the second set value.

[0025] S4.3: During the traction process, the traction speed and lateral swing angle of the front-end puller are monitored in real time by the monitoring module and sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front-end puller reaches the set threshold, it controls the winch to reduce the traction speed of the front-end puller to no more than the third set value.

[0026] S4.4: The position of the front-end puller is monitored in real time by the GNSS positioning component in the monitoring module and sent to the background control module. When the background control module determines that the distance between the front-end puller and the top of the tower has reached the set distance, it controls the winch to reduce the speed to no more than the fourth set value.

[0027] S4.5: After the cable strand to be pulled is pulled to the top of the tower and positioned, the wedge clamp of the front puller and the support clamp of the rear puller are sequentially released from the cable strand, and the cable strand that has been pulled is placed in the predetermined position.

[0028] Optionally, step S4.3 specifically includes: during the traction process, the traction speed of the front-end puller is monitored in real time by the speed monitoring component in the monitoring module, and the lateral swing angle of the front-end puller is monitored in real time by the gyroscope balancing component in the monitoring module. The traction speed and lateral swing angle of the front-end puller are sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front-end puller reaches the set threshold, the output power of the winch is adjusted so that the traction speed of the front-end puller is reduced to no more than the third set value.

[0029] Secondly, the present invention provides an ultra-long cable strand traction system for implementing the above-described ultra-long cable strand traction method, comprising: a winch, a back-end control module, a front-end puller, and a rear-end puller;

[0030] The winch also includes a traction wire rope;

[0031] The front-end puller and the rear-end puller are coupled together on the traction steel wire rope to form a double-support force unit through a rigid connection structure.

[0032] The main body of the front-end puller is equipped with a wedge clamp and a monitoring module. The wedge clamp is used to clamp and fix the end of the cable strand to be pulled, and the monitoring module is used to monitor the traction speed and balance of the front-end puller in real time.

[0033] The main body of the rear puller is provided with a support clamp for assisting in fixing the strand of cable to be pulled;

[0034] The background control module is electrically connected to the winch and the monitoring module, and is used to acquire the traction speed and balance status of the front-end puller in real time, and control the winch based on the traction speed and balance status of the front-end puller.

[0035] Optionally, the monitoring module includes a GNSS positioning component, a gyroscope balancing component, and a speed monitoring component, wherein the GNSS positioning component, the gyroscope balancing component, and the speed monitoring component are all electrically connected to the background control module.

[0036] Optionally, the front-end puller is further provided with a buffer module, which is located on the main body of the front-end puller and on the side opposite to the rear-end puller.

[0037] The beneficial effects of this invention are:

[0038] This invention provides a method for traction of ultra-long cable strands. In steps S1 and S2, a dual-support force structure is constructed for the cable strand to be traction using a front-end puller and a rear-end puller. This effectively distributes the concentrated load borne by traditional single-point traction to the two support points of the front-end and rear-end pullers, thereby greatly reducing the risk of puller tilting or overall overturning caused by stress concentration at a single point of clamping. This provides a stable mechanical foundation for traction of ultra-long, heavy-duty cable strands. Subsequently, step S3 initializes the monitoring module, ensuring the accuracy and reliability of the entire system data and laying a solid data foundation for intelligent monitoring of the traction process. The foundation is that, in the traction operation of step S4, instead of relying on manual experience, a monitoring module is used to monitor the traction speed and balance of the front-end puller in real time, and the winch is actively controlled by the background control module, forming a closed-loop intelligent control system. This system can dynamically respond to disturbances caused by external factors such as the distribution of cable strand weight and changes in wind load during the traction process, significantly suppressing the lateral sway of the puller and ensuring that the cable strand can move smoothly along the predetermined trajectory and posture. Ultimately, this achieves the goal of high-precision and high-safety stable traction, effectively solving the core technical problem of ultra-long cable strand traction in the construction of ultra-long span suspension bridges.

[0039] Meanwhile, this invention also provides an ultra-long cable strand traction system. Using a rear-end control module as the command center, it coordinates the power output of the winch with the sensing information from the monitoring module on the front-end puller via electrical connection, achieving integrated power and sensing systems. Utilizing a dual-support force unit formed by the rigid connection structure of the front and rear pullers coupled on the traction wire rope, this structural design is optimized from a mechanical model perspective, transforming traditional single-point dragging into two-point support. This significantly reduces the overturning moment of the puller body and improves its inherent stability under the enormous load of ultra-long cable strands. The wedge-shaped clamp integrated in the front puller provides reliable anchoring capability, while the monitoring module provides the system with "senses" and "nerves." The rear puller and its supporting clamp effectively share the weight and fluctuating load of the cable strand. The entire system constitutes a dedicated platform integrating mechanical structure, sensing detection, and automatic control, providing a solid hardware foundation for safe, efficient, and intelligent ultra-long cable strand traction operations. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the ultra-long cable strand traction method in this invention;

[0041] Figure 2 This is a schematic diagram of the ultra-long cable strand traction system in this invention;

[0042] Figure 3 This is a front view of the front puller in this invention;

[0043] Figure 4 This is a front view of the rear puller in this invention;

[0044] Figure 5 This is a schematic diagram of the wedge-shaped clamp in this invention;

[0045] The components include: 1. Front-end puller; 11. Wedge clamp; 12. GNSS positioning component; 13. Gyroscope balancing component; 14. Speed ​​monitoring component; 15. Buffer module; 16. Counterweight module; 2. Rear-end puller; 21. Support clamp; 3. Traction wire rope; 4. Rigid connection structure; 5. Strand to be pulled. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] This invention provides a method for pulling ultra-long cable strands, used for pulling ultra-long cable strands during suspension bridge construction. The following will describe the method in conjunction with embodiments.

[0052] Example 1

[0053] See Figure 1 The diagram illustrates the ultra-long cable strand traction method of the present invention, including:

[0054] S1: Assemble the traction device: Fix the front puller 1 and the rear puller 2 of the ultra-long cable strand traction system to the traction wire rope 3 of the winch.

[0055] S2: Cable strand installation: Fix the cable strand to be pulled onto the wedge clamp 11 on the front puller 1 and the support clamp 21 on the rear puller 2 respectively, so as to form a double-support force structure for the cable strand 5 to be pulled using the front puller 1 and the rear puller 2.

[0056] S3: System initialization: Start and initialize the monitoring module on the front-end puller 1 of the ultra-long cable strand traction system;

[0057] S4: Cable Traction: Start the winch of the extra-long cable traction system to perform traction operation on the cable strand 5 to be traction. During the traction process, the monitoring module monitors the traction speed and balance of the front-end puller 1 in real time and sends it to the background control module. The background control module controls the winch based on the traction speed and balance of the front-end puller 1 to achieve smooth traction of the cable strand 5 to be traction.

[0058] In this embodiment, a method for traction of ultra-long cable strands is provided. In steps S1 and S2, a dual-support force structure is constructed for the cable strand to be traction using a front-end puller and a rear-end puller. This effectively distributes the concentrated load borne by traditional single-point traction to the two support points of the front-end and rear-end pullers, thereby greatly reducing the risk of puller tilting or overall overturning caused by stress concentration at a single point of clamping. This provides a stable mechanical foundation for traction of ultra-long, heavy-duty cable strands. Subsequently, step S3 initializes the monitoring module, ensuring the accuracy and reliability of the entire system data and laying a solid foundation for intelligent monitoring of the traction process. Data foundation; In the traction operation of step S4, instead of relying on human experience, a monitoring module is used to monitor the traction speed and balance of the front-end puller in real time, and the winch is actively controlled by the background control module, forming a closed-loop intelligent control system. This system can dynamically respond to disturbances caused by external factors such as the self-weight distribution of the cable strands and changes in wind load during the traction process, significantly suppressing the lateral sway of the puller and ensuring that the cable strands can move smoothly along the predetermined trajectory and posture. Ultimately, this achieves the goal of high-precision and high-safety stable traction, effectively solving the core technical problem of ultra-long cable strand traction in the construction of ultra-long span suspension bridges.

[0059] Optionally, step S1 in this invention specifically includes:

[0060] S1.1: Clamp and fix the main body of the front puller 1 and the main body of the rear puller 2 onto the traction wire rope 3 of the winch, respectively.

[0061] S1.2: Adjust the spacing between the main body parts of the front puller 1 and the rear puller 2 on the traction wire rope 3, and connect the front puller 1 and the rear puller 2 into one unit through the rigid connection structure 4;

[0062] S1.3: Assemble the interlocking counterweight module on the front puller 1 to adjust the overall center of gravity to a balanced state.

[0063] Optionally, in step S1.3 of the present invention, the assembly and splicing of the counterweight module 16 specifically includes: connecting multiple independent counterweight blocks by bolts to increase or decrease the total counterweight mass until the front-end puller 1 has no tendency to tilt up in a static state.

[0064] In this embodiment, by fixing the main bodies of the front-end puller 1 and the rear-end puller 2 separately and then connecting them together with a rigid connection structure 4, the preset relative position and cooperative force relationship are maintained at all times during the traction process. This avoids the instability of the dual-support structure due to relative displacement or deformation of the two, making the traction force transmission more uniform and efficient, and ensuring that the force state of the traction cable strand 5 is reliably maintained. Furthermore, by assembling the spliced ​​counterweight module, the overall center of gravity of the puller system can be flexibly adjusted to accommodate different loads from different cable strand specifications and varying wind loads and other environmental conditions. This allows for pre-compensation of unbalanced moments that may cause tilting before construction, ensuring that the entire device is in an optimal stable state even in static conditions. This provides a higher safety margin and adaptability for the subsequent dynamic traction process, overcoming the inherent defects of traditional devices with fixed counterweights that cannot adapt to changing working conditions.

[0065] Furthermore, in this embodiment, the rigid connection structure 4 is a steel component used to fix the front puller 1 and the rear puller 2. Specifically, it can be a rod-shaped steel component that is fixedly connected to the front puller 1 and the rear puller 2 by bolts or welding, thereby ensuring the stability of the relative position and cooperative force relationship between the front puller 1 and the rear puller 2 during the traction process.

[0066] Furthermore, the distance between the front puller 1 and the rear puller 2 is 2 to 3 meters.

[0067] Optionally, step S2 in this invention includes:

[0068] S2.1: Inspect the appearance of the strand 5 to be pulled. After confirming that there is no surface damage, assemble the front end of the strand 5 to be pulled with the wedge clip and place it into the wedge clip 11 of the front puller 1.

[0069] S2.2: The wedge clamp 11 is fastened with high-strength bolts to anchor the front puller 1 to the strand 5 of the traction cable.

[0070] S2.3: Place the section of the cable strand 5 to be pulled into the support clamp 21 of the rear puller 2 near the front end, and clamp and fix it with high-strength bolts. The front puller 1 and the rear puller 2 form a double-support force structure for the cable strand 5 to be pulled, thereby realizing the installation of the cable strand 5 to be pulled.

[0071] In this embodiment, the visual inspection of the strand 5 to be pulled ensures that the strand itself is free from initial damage, thus preventing serious accidents such as breakage caused by defective strands being put into the traction process. Subsequently, through the cooperation of wedge-shaped clamps and wedge-shaped clamps 11, an anchoring point with a self-locking effect and strong anti-slip capability is formed at the front-end puller 1, ensuring the effective transmission of large load traction force. The rear-end puller 2 uses the supporting clamp 21 and bolts for auxiliary clamping and fixation. It is not a simple support, but rather a dual-support force structure formed in conjunction with the front-end anchoring point. This structure shares the weight of the strand and the various forces generated during the traction process, avoiding stress concentration and local damage that may occur with single-point clamping. This results in a better stress state for the strand throughout the traction process and a significant improvement in the connection safety factor.

[0072] Furthermore, in this embodiment, the inspection of the appearance of the traction cable strand 5 mainly involves checking for scratches on the strand and for appearance quality problems such as looseness, broken wires, and rust spots.

[0073] Optionally, in step S3 of the present invention, initializing the monitoring module on the front-end puller 1 of the ultra-long cable traction system includes: performing initial position calibration through the GNSS positioning component 12 (Global Navigation Satellite System), and initializing the speed monitoring component 14 and the gyroscope balancing component 13.

[0074] In this embodiment, multi-sensor collaborative initialization establishes a unified and accurate data benchmark and spatiotemporal coordinate starting point for intelligent control during system operation. Specifically, the initial position calibration of the GNSS positioning component 12 determines the precise position of the front-end puller 1 at system startup, providing a crucial positional information origin for subsequent tracking of the entire traction path, determination of the end deceleration position, and digital recording of the construction trajectory. The initialization of the speed monitoring component 14 and the gyroscope balancing component 13 eliminates the zero-position error and initial drift of the sensors themselves, ensuring that the monitored traction speed and attitude angle values ​​are accurate and reliable from the beginning. This provides high-quality data input for the judgment and decision-making of the background control module, preventing misjudgments and misoperations caused by sensor errors. Thus, it ensures that the entire intelligent control system operates accurately and reliably from the very first step, improving the control accuracy and reliability of the entire system.

[0075] Furthermore, before the traction operation, the position coordinates of the tower top, such as latitude and longitude, can be entered in the background control module. Based on the position coordinates of the tower top, the position coordinates of the front-end puller 1, which are obtained in real time by the GNSS positioning component 12 during the traction process, are compared to ensure the accuracy of tracking the entire traction path, judging the end deceleration position, and digitally recording the construction trajectory.

[0076] Optionally, step S4 in this invention includes:

[0077] S4.1: Start the winch, start traction using the graded acceleration mode, and ensure that the initial traction speed of the front puller 1 is not greater than the first set value;

[0078] S4.2: The traction speed of the front-end puller 1 is monitored in real time through the monitoring module and sent to the background control module in real time. When the background control module determines that the traction speed of the front-end puller 1 is stable, it controls the winch to gradually increase the traction speed of the front-end puller 1 to the second set value.

[0079] S4.3: During the traction process, the traction speed and lateral swing angle of the front-end puller 1 are monitored in real time by the monitoring module and sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front-end puller 1 reaches the set threshold, it controls the winch to reduce the traction speed of the front-end puller 1 to no more than the third set value.

[0080] S4.4: The position of the front-end puller 1 is monitored in real time by the GNSS positioning component 12 in the monitoring module and sent to the background control module. When the background control module determines that the distance between the front-end puller 1 and the top of the tower has reached the set distance, it controls the winch to reduce the speed to no more than the fourth set value.

[0081] S4.5: After the cable strand 5 to be pulled is pulled to the top of the tower and positioned, the wedge clamp 11 of the front puller 1 and the supporting clamp 21 of the rear puller 2 are sequentially disconnected from the cable strand, and the cable strand that has been pulled is placed in the predetermined position.

[0082] Optionally, step S4.3 of the present invention specifically includes: during the traction process, the traction speed of the front-end puller 1 is monitored in real time by the speed monitoring component 14 in the monitoring module, and the lateral swing angle of the front-end puller 1 is monitored in real time by the gyroscope balancing component 13 in the monitoring module. The traction speed and lateral swing angle of the front-end puller 1 are sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front-end puller 1 reaches the set threshold, the output power of the winch is adjusted so that the traction speed of the front-end puller 1 is reduced to no more than the third set value.

[0083] In this embodiment, a graded acceleration mode is used to achieve a smooth and stable traction start-up phase, avoiding the impact of sudden large acceleration on the cable strands, pullers, and mechanical systems. Subsequently, the speed is increased to a high efficiency during the stabilization phase, balancing efficiency and safety. By using the gyroscope balancing component 13 to monitor and manage the lateral swing angle in real time, an active balancing control system is constructed. This system can decisively take deceleration as the most effective stabilization measure when the sway reaches a preset threshold, greatly enhancing the system's anti-interference and self-stabilization capabilities under complex wind fields and dynamic loads. Based on GNSS positioning, predictive deceleration actively reduces the speed before approaching the high-risk area of ​​the tower top, and can be combined with the buffer module 15 to form a double insurance for end-collision protection, minimizing the potential damage to the tower top gantry and the front-end puller 1 caused by rigid impact.

[0084] Furthermore, in this embodiment, during traction, the background control module obtains the actual traction speed of the front-end puller 1 in real time through the speed monitoring component 14 in the monitoring module, and adjusts it to meet the set requirements.

[0085] Furthermore, in this embodiment, during traction, the background control module obtains the actual traction speed of the front-end puller 1 in real time through the speed monitoring component 14 in the monitoring module, and can also compare it with the traction speed output by the winch in real time, so as to determine whether the front-end puller 1 has loosened or slipped during the traction of the wire rope 3, and make timely adjustments to avoid safety hazards.

[0086] Furthermore, in this embodiment, the first setting is 15 meters per minute, the second setting is 30 meters per minute, the third setting is 20 meters per minute, and the fourth setting is 15 meters per minute.

[0087] Furthermore, in this embodiment, the threshold value for the lateral swing angle is set to 5°.

[0088] Furthermore, in step S4.2, the background control module determines that the traction speed of the front-end puller 1 is stable by measuring the change in the traction speed of the front-end puller 1 within a certain time period. For example, under some working conditions, it can be set that the change in the traction speed of the front-end puller 1 does not exceed 5% within a time period of 10 seconds. Then, the background control module determines that the traction speed of the front-end puller 1 is stable. At this time, the background control module controls the winch to gradually increase the traction speed of the front-end puller 1 to the second set value.

[0089] Furthermore, in step S4.4, when the distance between the front puller 1 and the top of the tower is within 50 meters, the winch is controlled to reduce its speed to no more than the fourth set value.

[0090] It should be noted that the values ​​of the first, second, third, and fourth set values ​​of the traction speed of the front-end puller 1, the threshold value of the lateral swing angle setting, and the set distance between the front-end puller 1 and the top of the tower in this embodiment are values ​​obtained by the applicant based on actual usage experience and statistical methods. Those skilled in the art can select their values ​​according to actual production and usage needs.

[0091] Example 2

[0092] Secondly, referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 The diagram shows an ultra-long cable strand traction system of the present invention, which is used to implement the ultra-long cable strand traction method in Embodiment 1, including: a winch, a background control module, a front-end puller 1 and a rear-end puller 2;

[0093] The winch also includes a traction wire rope 3;

[0094] The front puller 1 and the rear puller 2 are coupled into a double-support force unit on the traction steel wire rope 3 through a rigid connection structure 4.

[0095] The main body of the front-end puller 1 is equipped with a wedge clamp 11 and a monitoring module. The wedge clamp 11 is used to clamp and fix the end of the cable strand 5 to be pulled, and the monitoring module is used to monitor and control the traction speed and the balance of the front-end puller 1 in real time.

[0096] The main body of the rear puller 2 is provided with a support clamp 21 to assist in fixing the cable strand 5 to be pulled;

[0097] The background control module is electrically connected to the winch and monitoring module to obtain the traction speed and balance status of the front-end puller 1 in real time, and to control the winch based on the traction speed and balance status of the front-end puller 1.

[0098] This embodiment provides an ultra-long cable strand traction system. A back-end control module serves as the command center, coordinating the power output of the winch with the sensing information from the monitoring module on the front-end puller 1 via electrical connection, achieving integrated power and sensing systems. The system utilizes a dual-support unit formed by the front-end puller 1 and the rear-end puller 2 coupled to the traction wire rope 3 via a rigid connection structure 4. This structural design optimizes the mechanical model, transforming traditional single-point dragging into two-point support, significantly reducing the overturning moment of the puller body and improving its inherent stability under the enormous load of ultra-long cable strands. The wedge-shaped clamp 11 integrated in the front-end puller 1 provides reliable anchoring capability, while the monitoring module provides the system with "senses" and "nerves." The rear-end puller 2 and its supporting clamp 21 effectively share the weight and fluctuating load of the cable strands. The entire system constitutes a dedicated platform integrating mechanical structure, sensing detection, and automatic control, providing a solid hardware foundation for safe, efficient, and intelligent ultra-long cable strand traction operations.

[0099] Furthermore, the wedge clamp 11 is connected to the lower side of the main body of the front puller 1 via a connecting rod; the supporting clamp 21 is connected to the lower side of the main body of the rear puller 2 via a connecting rod.

[0100] Furthermore, in this embodiment, the rigid connection structure 4 is a steel component used to fix the front puller 1 and the rear puller 2. Specifically, it can be a rod-shaped steel component that is fixedly connected to the front puller 1 and the rear puller 2 by bolts or welding, thereby ensuring the stability of the relative position and cooperative force relationship between the front puller 1 and the rear puller 2 during the traction process.

[0101] Optionally, refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The monitoring module in this invention includes: a GNSS positioning component 12, a gyroscope balancing component 13, and a speed monitoring component 14. The GNSS positioning component 12, the gyroscope balancing component 13, and the speed monitoring component 14 are all electrically connected to the background control module.

[0102] In this embodiment, a multi-sensor fusion precision measurement system is formed. Different sensor components perform their respective functions while working collaboratively to comprehensively perceive key state parameters during the traction process: the GNSS positioning component 12 provides location information, enabling precise positioning of the trajectory of the front-end puller 1 and prediction of its end position; the gyroscope balancing component 13 senses three-dimensional attitude changes, particularly the sensitive lateral sway angle, which is crucial for monitoring stability; and the speed monitoring component 14 accurately measures the real-time traction speed and compares it with the winch's set speed to prevent slippage. All three are electrically connected to the back-end control module, and the data they collect is aggregated in real-time for fusion processing and analysis. This provides comprehensive, multi-dimensional data support for making precise control decisions, laying the data foundation for the entire system's intelligent control function and providing indispensable technical support for achieving automated, high-precision traction control.

[0103] Optionally, refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 The front-end puller 1 of the present invention is also provided with a buffer module 15 and a counterweight module 16. The buffer module 15 is provided on the main body of the front-end puller 1 and is located on the side away from the rear-end puller 2.

[0104] The counterweight module 16 is located on the lower side of the main body of the front puller 1.

[0105] In this embodiment, the buffer module 15 is located at the very front of the front puller 1, making it the first point of contact and energy absorber in the event of an accidental frontal collision. Specifically, the buffer module 15 can be made of energy-absorbing materials such as polyurethane elastomers, capable of effectively dissipating and absorbing the enormous impact kinetic energy through its own elastic deformation during a collision, transforming a violent rigid impact into a gentler buffering process. This not only protects the puller body and the tower top gantry structure from damage, reducing maintenance costs and the risk of project delays, but more importantly, it greatly improves the safety of the construction process near the final positioning stage, providing a final reliable safety guarantee for the entire traction operation and enhancing the robustness and reliability of the system.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for traction of ultra-long cable strands, characterized in that, include: S1: Assemble the traction device: Fix the front puller (1) and rear puller (2) of the ultra-long cable strand traction system to the traction wire rope (3) of the winch; S2: Cable strand installation: Fix the cable strand to be pulled onto the wedge clamp (11) on the front puller (1) and the support clamp (21) on the rear puller (2) respectively, and use the front puller (1) and the rear puller (2) to form a double-support force structure for the cable strand (5) to be pulled; S3: System initialization: Start and initialize the monitoring module on the front-end puller (1) of the ultra-long cable strand traction system; S4: Cable traction: Start the winch of the ultra-long cable traction system to perform traction operation on the cable strand (5) to be traction, and during the traction process, use the monitoring module to monitor the traction speed and balance of the front-end puller (1) in real time and send it to the background control module. The background control module controls the winch based on the traction speed and balance of the front-end puller (1) to achieve stable traction of the cable strand (5) to be pulled. Step S1 specifically includes: S1.1: The main body of the front puller (1) and the main body of the rear puller (2) are clamped and fixed to the traction wire rope (3) of the winch respectively; S1.2: Adjust the spacing between the main body parts of the front puller (1) and the rear puller (2) on the traction wire rope (3), and connect the front puller (1) and the rear puller (2) into one unit through the rigid connection structure (4); S1.3: Assemble the spliced ​​counterweight module (16) on the front puller (1) to adjust the overall center of gravity.

2. The ultra-long cable strand traction method according to claim 1, characterized in that, In step S1.3, the assembly and splicing of the counterweight module (16) specifically includes: connecting multiple independent counterweight blocks with bolts to increase or decrease the total counterweight mass until the front puller (1) has no tendency to tilt up in a static state.

3. The ultra-long cable strand traction method according to claim 1, characterized in that, Step S2 includes: S2.1: Inspect the appearance of the strand (5) to be pulled. After confirming that there is no surface damage, assemble the front end of the strand (5) to be pulled with the wedge clip and place it into the wedge clamp (11) of the front puller (1). S2.2: The wedge clamp (11) is fastened with high-strength bolts to anchor the front puller (1) to the strand (5) of the traction cable. S2.3: Place the section of the cable strand (5) to be pulled into the support clamp (21) of the rear puller (2) near the front end, and clamp and fix it with high-strength bolts. The front puller (1) and the rear puller (2) form a double-support force structure for the cable strand (5) to be pulled, so as to realize the installation of the cable strand (5).

4. The ultra-long cable strand traction method according to claim 1, characterized in that, In step S3, the initialization of the monitoring module on the front-end puller (1) of the ultra-long cable traction system includes: initial position calibration by using the GNSS positioning component (12) in the monitoring module, and initialization of the speed monitoring component (14) and gyroscope balancing component (13) in the monitoring module.

5. The ultra-long cable strand traction method according to claim 1, characterized in that, Step S4 includes: S4.1: Start the winch, start traction using the graded acceleration mode, and the initial traction speed of the front puller (1) is not greater than the first set value; S4.2: The traction speed of the front-end puller (1) is monitored in real time by the monitoring module and sent to the background control module in real time. When the background control module determines that the traction speed of the front-end puller (1) is stable, it controls the winch to gradually increase the traction speed of the front-end puller (1) to the second set value. S4.3: During the traction process, the traction speed and lateral swing angle of the front-end puller (1) are monitored in real time by the monitoring module and sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front-end puller (1) reaches the set threshold, it controls the winch to reduce the traction speed of the front-end puller (1) to no more than the third set value. S4.4: The position of the front-end puller (1) is monitored in real time by the GNSS positioning component (12) in the monitoring module and sent to the background control module. When the background control module determines that the distance between the front-end puller (1) and the top of the tower reaches the set distance, it controls the winch to reduce the speed to no more than the fourth set value. S4.5: After the cable strand (5) to be pulled is pulled to the top of the tower and positioned, the wedge clamp (11) of the front puller (1) and the support clamp (21) of the rear puller (2) are disconnected from the cable strand in sequence, and the cable strand that has been pulled is placed in the predetermined position.

6. The ultra-long cable strand traction method according to claim 5, characterized in that, The specific steps in step S4.3 include: during the traction process, the traction speed of the front puller (1) is monitored in real time by the speed monitoring component (14) in the monitoring module, and the lateral swing angle of the front puller (1) is monitored in real time by the gyroscope balance component (13) in the monitoring module. The traction speed and lateral swing angle of the front puller (1) are sent to the background control module in real time. When the background control module determines that the lateral swing angle of the front puller (1) reaches the set threshold, the output power of the winch is adjusted so that the traction speed of the front puller (1) is reduced to no more than the third set value.

7. An ultra-long cable strand traction system for implementing the ultra-long cable strand traction method according to any one of claims 1 to 6, characterized in that, include: The winch, the back-end control module, the front-end puller (1) and the back-end puller (2); The winch also includes a traction wire rope (3); The front puller (1) and the rear puller (2) are coupled together on the traction wire rope (3) through a rigid connection structure (4) to form a double-support force unit; The main body of the front-end puller (1) is provided with a wedge clamp (11) and a monitoring module. The wedge clamp (11) is used to clamp and fix the end of the cable strand (5) to be pulled. The monitoring module is used to monitor the traction speed and balance of the front-end puller (1) in real time. The main body of the rear puller (2) is provided with a support clamp (21) for assisting in fixing the strand of cable to be pulled (5). The background control module is electrically connected to the winch and the monitoring module, and is used to obtain the traction speed and balance status of the front-end puller (1) in real time, and control the winch based on the traction speed and balance status of the front-end puller (1).

8. The ultra-long cable strand traction system according to claim 7, characterized in that, The monitoring module includes a GNSS positioning component (12), a gyroscope balancing component (13), and a speed monitoring component (14). The GNSS positioning component (12), the gyroscope balancing component (13), and the speed monitoring component (14) are all electrically connected to the background control module.

9. The ultra-long cable strand traction system according to claim 8, characterized in that, The front-end puller (1) is also provided with a buffer module (15) and a counterweight module (16). The buffer module (15) is located on the main body of the front-end puller (1) and is located on the side away from the rear-end puller (2). The counterweight module (16) is located on the lower side of the main body of the front puller (1).

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